Enis has been working with our research team since 2002. He currently serves as a pschometrician at NAEP Education Statistics Services Institute (NESSI) of American Institutes for Research (AIR) in Washington DC. He holds an Ed.D. degree in Measurement, Evaluation & Statistics from Teachers College, Columbia University. Enis is bilingual in Turkish and English; and previously worked as science and physics teacher at the high school level in Turkey. His research interests include test validity, cognitive diagnostic assessment and Differential Item Functioning (DIF).

E-mail: ed346@columbia.edu